Hello and welcome to Bleepingcomputer.
Have you tried Windows Vistas network trouble shooter to see if it can resolve your connection issue?
Does the networking icon appear in the system tray at all?
Check your device manager in the windows Vista control panel, look under network adapters and see if there is either a red X or a yellow exclamation mark over the network icon, generally the above mentioned icon will be expanded from the tree if it contains either error.
you can also try going to the start menu in the search field, type CMD
The result should be CMD.EXE right click CMD.EXE choose RUN AS ADMINISTRATOR
The command prompt window will appear on your screen.
Type IPCONFIG /ALL and see what appears in the text upon hitting the enter key.
You may have to set up your network connection again under the network icon in the windows control panel.
I will not post any suggestions at this point, until I know the results to the suggestions I made above.
I will then determine if advice should be offered to set up your wireless network connection again.
I also need to ask you if you are connecting through a router which has a wireless broadcast and if so, what make and model number is your router?
Thanks in advance.
Edited by MrBruce1959, 11 September 2010 - 01:26 AM.